Potential Pre-exposure Prophylaxis Use Research Articles

Identifying HIV PrEP Attributes to Increase PrEP Use Among Different Groups of Gay, Bisexual, and Other Men Who Have Sex with Men: A Latent Class Analysis of a Discrete Choice Experiment.

Daily pre-exposure prophylaxis (PrEP) is highly effective at preventing HIV among gay, bisexual, and other men who have sex with men (GBMSM), although uptake remains suboptimal. By identifying the features of PrEP that appeal to various subgroups of GBMSM, this study aimed to improve PrEP uptake by examining preferences for PrEP use. Adults ≥ 18years old in six New England states completed an online discrete choice experiment survey. A latent class analysis (LCA) was conducted to identify groups of GBMSM based on four attributes of choices for PrEP (cost, time, side effects, and mode of administration). Multinominal logistic regression was conducted to compare the association between sociodemographic and behavioral characteristics and class memberships. Data from 675 GBMSM were analyzed. A 3-Class model was selected as the best fit model. Class 1 (47.7% of individuals) was identified as having "no specific preferences". Class 2 (18.5% of individuals) were "Cost- and time-conscious" and were significantly more likely to be older, have prior sexually transmitted infection (STI) testing, have low household income, private insurance, and have extreme concerns about HIV risk than those with no specific preference (Class 1). Finally, Class 3 (34.1% of individuals) were "Side effects-conscious" and were more likely to have low income, private insurance, and have moderate and extreme concerns about HIV risk than those with no specific preference (Class 1). Findings indicate that outreach to GBMSM who have never used PrEP should emphasize low cost and short travel times to increase potential PrEP use.

Women’s perspectives on barriers to potential PrEP uptake for HIV prevention: HIV risk assessment, relationship dynamics and stigma

HIV remains a significant health issue for women, and multiple overlapping factors shape women's HIV-related risk. Pre-exposure prophylaxis (PrEP) offers critical advantages over other existing options, yet it remains significantly underused among women in the USA where limited work has explored women’s opinions on barriers to potential PrEP use. Using open-ended text responses from a sample of women seeking care at a US urban family planning health centre, this study aimed to understand perceptions of factors affecting potential PrEP use. Three themes concerning key factors impacting potential PrEP use emerged: HIV risk assessment, relationship dynamics, and anticipated stigma. Women’s assessment of HIV risk suggests that identifying women in clinical settings as having low self-perceived risk may overlook the complexity of how women determine HIV-related risk and prevention needs. Women frequently referenced relationship dynamics when considering PrEP and discussed anticipated partner reactions about use contributing to non-use. Fear or worry of stigma were expressed as motivations to not use PrEP. Study results highlight the importance of public health and health care professionals normalising PrEP as a strategy in women’s HIV prevention and sexual health decision-making. Woman-centred PrEP education, screening and communication strategies reflective of their unique HIV-related risk context are needed.

The Associations of HIV Pre-Exposure Prophylaxis Interest and Sexual Risk Behaviors Among Young Black Women.

The uptake of pre-exposure prophylaxis (PrEP) is low among young Black cisgender heterosexual women, although this subgroup faces a higher burden of new HIV diagnoses. This study explored the association between sexual risk and prevention behaviors, and oral PrEP and vaginal PrEP ring interest among young Black women (YBW). A sample of YBW (N = 208) 18-25 years of age completed a self-administered questionnaire assessing sexual risk and prevention behaviors, HIV and sexually transmitted infection (STI) testing, and PrEP interest from June to December 2018. Results revealed that 103 YBW were interested in taking oral or vaginal PrEP, with 43% interested in oral PrEP use only, 28% interested in vaginal PrEP use only, and 29% interested in both oral and vaginal PrEP use. Logistic regressions revealed that YBW who had sex in the last 1-4 weeks or 3-6 months had lower odds of being interested in oral PrEP and YBW who had sex in the last 1-4 weeks had lower odds of being interested in vaginal PrEP compared with those whose last sexual encounter occurred in the last week. A large percentage of our sample was unaware of PrEP at the time of survey administration, but after learning about PrEP became more interested in potential PrEP use. This indicates that more education about the benefits of PrEP coupled with harm reduction counseling to lower their risk of STI and HIV infections is necessary to increase PrEP interest among YBW.

Intimate Partner Violence, HIV Pre-Exposure Prophylaxis (PrEP) Acceptability, and Attitudes About Use: Perspectives of Women Seeking Care at a Family Planning Clinic.

Pre-exposure prophylaxis (PrEP) presents an opportunity to expand prevention options for women at risk for HIV infection. Yet, women's PrEP use remains low and relatively little is known about PrEP acceptability and attitudes among a sub-population of women at risk for HIV-those experiencing intimate partner violence (IPV). A cross-sectional survey included closed and open-ended questions to assess IPV, PrEP acceptability, and attitudes about PrEP use among women seeking care at an urban family planning clinic in Pittsburgh, Pennsylvania (N = 145). Approximately 70% of women reported being willing to use PrEP with the key reasons for potential use including previous STI diagnosis, inconsistent condom use, and lack of or dishonest conversations with partners. Among women reporting recent IPV (41%), potential barriers to PrEP included concerns around drug effects, access/affordability, and adherence. Over half of women reporting recent IPV reported concerns around partner reaction impacting potential PrEP use. Results from this mixed-methods study highlight the need for a woman-centered PrEP intervention that uniquely includes awareness raising and understanding of PrEP for women, as well as reflects the context of IPV in decision-making and care.

Social Networks and Its Impact on Women's Awareness, Interest, and Uptake of HIV Pre-exposure Prophylaxis (PrEP): Implications for Women Experiencing Intimate Partner Violence.

In the United States, women represent less than 5% of all pre-exposure prophylaxis (PrEP) users. Social networks may promote and/or inhibit women's PrEP awareness, which could influence PrEP intentions. Furthermore, women experiencing intimate partner violence (IPV) may have smaller, less supportive networks, which could deter or have no impact on PrEP care engagement. This study examined associations between network characteristics and women's PrEP awareness, interest, uptake, and perceived candidacy and analyzed IPV as an effect modifier. From 2017 to 2018, data were collected from a prospective cohort study of 218 PrEP-eligible women with (n = 94) and without (n = 124) IPV experiences in Connecticut. Women completed surveys on demographics, IPV, social networks, and PrEP care continuum outcomes. Adjusted analyses showed that PrEP awareness related to having more PrEP-aware alters. PrEP intentions related to having more alters with favorable opinions of women's potential PrEP use and a smaller network size. Viewing oneself as an appropriate PrEP candidate related to having more PrEP-aware alters and more alters with favorable opinions of women's potential PrEP use. IPV modified associations between network characteristics and PrEP care. Having members who were aware of and/or used PrEP was positively associated with PrEP care engagement for women without IPV experiences but had either no effect or the opposite effect for women experiencing IPV. Improving PrEP attitudes might improve its utilization among women. Social network interventions might be one way to increase PrEP uptake among many US women but may not be as effective for women experiencing IPV.

Applying National Estimates of Adults With Indications for Pre-Exposure Prophylaxis to Populations of Men Who Have Sex With Men and People Who Inject Drugs in Colorado: Modeling Study.

BackgroundOral pre-exposure prophylaxis (PrEP) is a highly effective option for HIV prevention. To realize the full benefit of PrEP at the population level, uptake must reach those at the greatest risk of HIV acquisition. Guidance published by Centers for Disease Control and Prevention (CDC) suggests that the number of individuals with indications for PrEP is 1.1-1.2 million nationally based on survey data of key populations and local transmission patterns. We applied these estimates at state and county levels to determine the number of individuals who might benefit from PrEP locally and compared our estimates to CDC-published estimates for Colorado.ObjectiveThis analysis aimed to produce estimates of key populations with indications for PrEP in Colorado as a whole and by county type. These estimates will be used for public health strategic planning for HIV prevention goals at the state and county jurisdictional levels.MethodsColorado population estimates were obtained from the state demography office, which utilizes US decennial census data and input from county and local agencies to forecast the population. We limited our analysis to adults aged 18-59 years to be consistent with CDC methodology for PrEP estimates. We performed a literature review to define the best population-level percentages to determine numbers of HIV-negative men who have sex with men (MSM) and people who inject drugs (PWID) in Colorado. These percentages were applied to the state and to each county by its rural-urban designation. Finally, CDC-derived percentages of MSM and PWID with indications for PrEP were applied to these estimates to determine numbers of MSM and PWID who may benefit from PrEP use.ResultsIn 2017, 3,252,648 adults aged 18-59 years were living in Colorado. By applying published estimates of percentages of men who had sex with other men in the past 12 months, we determined that 41,353-49,624 adult males could be considered sexually active MSM. We estimated that 9758-13,011 adults aged 18-59 years were likely to have injected drugs in the past 12 months. By accounting for numbers of people living with HIV in those categories and applying the CDC PrEP percentages of MSM and PWID with indications for PrEP nationally, we estimated that 8792-12,528 MSM and PWID in Colorado had indications for PrEP; this number is smaller than that estimated by CDC, although within the lower CI limit.ConclusionsBy employing a simple framework consisting of census data, literature review, population estimates, and national estimates for PrEP indicators, we derived estimates for potential PrEP use in our state. Statewide estimates of key populations by state and county type will enable health officials to set informed goals and track progress toward optimizing PrEP uptake. This formula may be applicable to other states with similar epidemics and resources.

High HIV seroconversion rate in hepatitis C virus-infected drug users followed in a harm reduction unit: a lost opportunity for preexposure prophylaxis.

Current harm reduction strategies will probably remain insufficient to eliminate HIV transmission among drug users. We aimed to estimate the HIV seroconversion rate among drug users followed at a harm reduction unit (HRU) to evaluate the potential use of preexposure prophylaxis as a prevention tool. A cohort of drug users has been followed at an HRU in Madrid between 2013 and 2016. Individuals who were HIV negative at baseline and who had at least one retest for HIV infection were eligible. Kaplan-Meier methods were employed to estimate the incidence density. A total of 954 drug users had at least an HIV test. At baseline, 260 were HIV negative and had at least one follow-up HIV test. After 330.89 person-years of risk for HIV infection, 10 (3.8%) seroconverted. Overall incidence density of HIV seroconversion was 3.02 [95% confidence interval (CI); 1.4-5.5] per 100 person-years, with differences according to hepatitis C virus (HCV) serostatus: 1.17 (95% CI; 0.1-4.2) per 100 person-years in negative HCV individuals and 4.98 (95% CI; 2.1-9.8) per 100 person-years in positive HCV individuals. In the multivariable analysis, infection with HCV remained independently associated with time to HIV seroconversion (adjusted hazard ratio = 6.43; 95% CI; 1.1-36.5, P = 0.035). Despite efforts in HIV prevention in a HRU, a high incidence of HIV was found among active drug users. Positive HCV status is a strong predictor of HIV seroconversion. In this context, preexposure prophylaxis implementation should be considered as an additional tool for HIV prevention in this population.

Fertility desires and preferences for safer conception strategies among people receiving care for HIV at a publicly-funded clinic in Seattle, WA

ABSTRACTUnderstanding fertility desires and preferences for HIV prevention among individuals living with HIV, including the potential use of pre-exposure prophylaxis (PrEP) by HIV uninfected partners, can inform the delivery of safer conception counseling to reduce the risk of HIV transmission during pregnancy attempts. Men and women, predominantly heterosexual, engaged in HIV care in Seattle, WA, self-administered a questionnaire and we abstracted antiretroviral therapy (ART) status and HIV viral levels from medical records. We summarized participants’ sexual behavior, fertility desires, and preferences for safer conception strategies and used log-binomial regression to identify demographic, sexual, and behavioral factors associated with perceived acceptability of PrEP for HIV uninfected partners during pregnancy attempts. 52% of the 150 participants were female and the mean age was 48 years (range 23–74). 94.7% of participants were using ART and 79.3% had HIV viral load < 40 copies/mL. 22.2% of men and 34.6% of women reported that a healthcare provider had initiated discussion about fertility desires. 28.7% of participants were reproductive-age and desired children. Among sexually active reproductive-age participants with fertility desires, 56.3% reported inconsistent condom use and 62.5% did not report using effective birth control. 74.4% of reproductive age participants with fertility desires perceived that PrEP would be acceptable to an HIV uninfected partner and there were no significant predictors of PrEP acceptability. Nearly one third of reproductive-aged individuals living with HIV expressed fertility desires, highlighting a need for safer conception counseling in this setting. PrEP and ART were favored safer conception strategies.

Awareness and willingness to use HIV pre-exposure prophylaxis among men who have sex with men in low- and middle-income countries: a systematic review and meta-analysis.

Introduction: To facilitate provision of pre-exposure prophylaxis (PrEP) in low- and middle-income countries (LMIC), a better understanding of potential demand and user preferences is required. This review assessed awareness and willingness to use oral PrEP among men who have sex with men (MSM) in LMIC.Methods: Electronic literature search of Cochrane library, Embase, PubMed, PsychINFO, CINHAL, Web of Science, and Google Scholar was conducted between July and September 2016. Reference lists of relevant studies were searched, and three authors contacted for additional data. Non-peer reviewed publications were excluded. Studies were screened for inclusion, and relevant data abstracted, assessed for bias, and synthesized.Results: In total, 2186 records were identified, of which 23 studies involving 14,040 MSM from LMIC were included. The proportion of MSM who were aware of PrEP was low at 29.7% (95% CI: 16.9–44.3). However, the proportion willing to use PrEP was higher, at 64.4% (95% CI: 53.3–74.8). Proportions of MSM aware of PrEP was <50% in 11 studies and 50–70% in 3 studies, while willingness to use PrEP was <50% in 6 studies, 50–70% in 9 studies, and over 80% in 5 studies. Several factors affected willingness to use PrEP. At the individual domain, poor knowledge of PrEP, doubts about its effectiveness, fear of side effects, low perception of HIV risk, and the need to adhere or take medicines frequently reduced willingness to use PrEP, while PrEP education and motivation to maintain good health were facilitators of potential use. Demographic factors (education, age, and migration) influenced both awareness and willingness to use PrEP, but their effects were not consistent across studies. At the social domain, anticipated stigma from peers, partners, and family members related to sexual orientation, PrEP, or HIV status were barriers to potential use of PrEP, while partner, peer, and family support were facilitators of potential use. At the structural domain, concerns regarding attitudes of healthcare providers, quality assurance, data protection, and cost were determinants of potential use.Conclusions: This review found that despite low levels of awareness of PrEP, MSM in LMIC are willing to use it if they are supported appropriately to deal with a range of individual, social, and structural barriers.

Awareness and Acceptability of Pre-exposure HIV Prophylaxis Among Men Who have Sex with Men in Baltimore.

This paper assessed characteristics associated with awareness of and willingness to take pre-exposure prophylaxis (PrEP) among Baltimore men who have sex with men (MSM). We used data from BESURE-MSM3, a venue-based cross-sectional HIV surveillance study conducted among MSM in 2011. Multivariate regression was used to identify characteristics associated with PrEP knowledge and acceptability among 399 participants. Eleven percent had heard of PrEP, 48% would be willing to use PrEP, and none had previously used it. In multivariable analysis, black race and perceived discrimination against those with HIV were significantly associated with decreased awareness, and those who perceived higher HIV discrimination reported higher acceptability of PrEP. Our findings indicate a need for further education about the potential utility of PrEP in addition to other prevention methods among MSM. HIV prevention efforts should address the link between discrimination and potential PrEP use, especially among men of color.

Young adult women and correlates of potential adoption of pre-exposure prophylaxis (PrEP): results of a national survey.

We examine potential use of pre-exposure prophylaxis (PrEP) among young adult women, based on nationally representative random-digit dial telephone household survey of 1,453 US African-American and white women. The hypotheses were generated based on Health Belief Model. Our analyses showed that, as compared to women of 30-45 years old, young women of 20-29 years old experienced stronger social influences on PrEP uptake. However, as compared to older women, young women did not report higher potential PrEP uptake or adherence, despite their greater risk of HIV. For PrEP to be an effective method of prevention for young adult women, interventions are needed to increase HIV risk awareness.

Racial Differences and Correlates of Potential Adoption of Preexposure Prophylaxis

To examine the association between sociodemographic factors, sexual behaviors, and social factors on potential uptake of preexposure prophylaxis (PrEP) among African American and White adult women in the United States. Participants were recruited through a nationally representative, random-digit dial telephone household survey. Participants comprised a nationally representative, random sample of unmarried African American (N = 1042) and White women (N = 411) aged 20-44 years. Interviews were conducted using computer-assisted telephone interviewing technology. Bivariate and multivariate analyses examined the relationship between sociodemographics, sexual behaviors, and social influences on women's potential uptake of PrEP. In multivariate analyses, women with lower educational status, greater lifetime sexual partners, provider recommendations supportive of PrEP, and peer norms supportive of PrEP use were more likely to report potential PrEP uptake. Racial analyses revealed that compared with White women, African American women were significantly more likely to report potential use of PrEP [adjusted odds ratio (aOR) = 1.76, P ≤ 0.001], more likely to report use of PrEP if recommended by a health-care provider (aOR = 1.65, P ≤ 0.001), less likely to report that they would be embarrassed to ask a health-care provider for PrEP (aOR = 0.59, P ≤ 0.05), and more likely to report use of PrEP if their female friends also used PrEP (aOR = 2.2, P ≤ 0.001). The potential cost for PrEP was identified as a barrier to adoption by both African American and White women. Findings suggest that women at increased risk for HIV, including those with less education and greater number of sexual partners, may be more likely to use PrEP, although cost may serve as a barrier.

Awareness and Willingness to Use HIV Pre-Exposure Prophylaxis amongst Gay and Bisexual Men in Scotland: Implications for Biomedical HIV Prevention

ObjectivesTo investigate the awareness of, and willingness to use, HIV Pre-Exposure Prophylaxis (PrEP), and willingness to take part in a PrEP study among gay and bisexual men in Scotland.MethodsCross-sectional survey of 17 gay commercial venues in Glasgow and Edinburgh in May 2011 (N = 1515, 65.2% response rate); 1393 are included in the analyses.ResultsJust under one-third of participants had heard of PrEP (n = 434; 31.2%), with awareness associated with being aged older than 35 years, talking to UAI partners about HIV, and with having had an HIV or STI test in the previous 12 months. Around half were willing to take part in a PrEP study (n = 695; 49.9%) or to take PrEP on a daily basis (n = 756; 54.3%). In multivariate analysis, willingness to take PrEP was associated with lower levels of education, regular gay scene attendance, ‘high-risk’ unprotected anal intercourse (UAI) and testing for HIV or STI in the previous 12 months. Reasons for not wanting to participate in a PrEP study or take PrEP included perceptions of low personal risk of HIV and concerns with using medication as an HIV prevention method.ConclusionsThere is a willingness to engage in new forms of HIV prevention and research amongst a significant number of gay and bisexual men in Scotland. Future biomedical HIV interventions need to consider the links between sexual risk behaviour, testing, and potential PrEP use.

The potential uses of preexposure prophylaxis for HIV prevention among people who inject drugs

Oral preexposure prophylaxis (PrEP) has shown HIV preventive efficacy for several key populations at risk for HIV infection including MSM and heterosexual men and women in HIV serodiscordant relationships. An efficacy trial of daily oral tenofovir among people who inject drugs (IDU) is underway in Thailand. Although efficacy data is pending, there is emerging biological and public health plausibility data suggesting the utility of PrEP as an effective component of combination HIV prevention for IDU. Drawing from studies characterizing adherence to antiretroviral therapy for IDU, there are a range of scientific and operational considerations for the potential use of PrEP for IDU. We review here the available literature on the potential use of PrEP for IDU, barriers to uptake and adherence, and potential implementation science questions, which could address, and potently increase, the effectiveness of this intervention. IDU remain the most underserved population in the HIV response worldwide, and have a marked gap in prevention services, making PrEP a potentially promising addition to the prevention toolkit for people who use drugs and, for those already living with HIV infection, for their spouses and other sexual partners.